'Big Brother' replaces four housemates

Four contestants have replaced on 'Big Brother'.

Amy & Sally Broadbent, Harriet Jackson, Kieran McLeod and Sarah Greenwood, 24, were evicted in a shock elimination as part of the latest Timebomb Twist tonight (29.05.15) after they were informed the nominations had been reversed.

But four new housemates gradually entered the house in their place, including theatre company owner Simon Gross, who was the first housemate to be evicted from the series earlier this month.

The 27-year-old twins were "gutted" to be the first evictees tonight.

The blonde beauties told host Emma Willis: "I think if we knew that we were nominated, we would have been prepared to go. It was just so quick."

Harriet Jackson, 22, was the second to eliminated after being asked to sit in a Timebomb Machine and was swiftly replaced by glamour model and dominatrix Harry Amelia Martin, 22, who was dressed in a sexy Dorothy from the 'Wizard of Oz' costume.

In her tearful post eviction interview, Harriet said: "I feel s**t. Some f**ker has taken my place in a Dorothy outfit."

But she later added: "This will bring my family closer. I'm so humbled by the experience."

Kieran, 30, was also evicted via the Timebomb Machine and replaced by Irish chemistry student and stripper Marc O'Neill, 29.

Personal trainer Sam Kay, 27, was the third new housemate to be introduced and her first task was to inform Sarah she was eliminated.

Simon, 46, who previously admitted he is determined to carve out a career in showbiz, then re-entered the house and received a mixed reaction from his fellow contestants.